What word is there in English for sucking with your nose? There are people who do not sneeze but instead have a bad habit of sucking with their nose snot in again. However, the English dictionary definition for sucking refers to the mouth.

@Andrew: Agreed. Snorking is in through the nose, contrasting with hawking, which is out through the throat / mouth.
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FumbleFingersFeb 13 '14 at 19:32

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@Louel Ah, so it is. I guess I would say that anecdotally at least, I'm used to sniffle being used as a noun and sniff the verb, though they can both swap those parts of speech.
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AbernastyFeb 13 '14 at 19:33

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Since you're answering with reference to UK slang, maybe things are different on that side of the pond. But in the US "to sniff" is usually inhaling air audibly; "to snort" is to make a pig-like sound while inhaling (or to inhale drugs, esp. cocaine); and "to sniffle" involves inhaling snot. The question was about snot. So, I still say sniffle.
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joseph_morrisFeb 13 '14 at 23:30